The module has built-in support for fibers via asyncblock](https://github.com/scriby/asyncblock).
To take advantage of it, all you need to do is install asyncblock from npm and wrap your test with it (see above for an example).

Browser harness will auto-detect that asyncblock is being used and turn all asynchronous calls into "blocking-style".

Note that using fibers to write the tests is optional, but it is highly recommended. See no-fibers.js for an example of writing tests without fibers.